[Bug target/53511] SH Target: Add support for fma patterns

kkojima at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Sun Jun 3 22:48:00 GMT 2012


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53511

--- Comment #3 from Kazumoto Kojima <kkojima at gcc dot gnu.org> 2012-06-03 22:48:17 UTC ---
(In reply to comment #2)
It would be better to ask these generic issues to the experts
on the gcc list, I think.  About the SH specific one,

> Effectively, the '*macsf3' / 'mac_media' patterns and the -mfused-madd /
> -mno-fused-madd replicate middle-end functionality which is given by the 'fma'
> patterns and the '-ffp-contract=' option.
> Thus I'd like to propose to remove the '*macsf3' / 'mac_media' patterns and
> deprecate the -mfused-madd / -mno-fused-madd options.

Sounds very plausible.



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